[v2,0/4] selftests/resctrl: Add non-contiguous CBMs in Intel CAT selftest

Message

Maciej Wieczor-Retman Dec. 12, 2023, 2:52 p.m. UTC

Non-contiguous CBM support for Intel CAT has been merged into the kernel
with Commit 0e3cd31f6e90 ("x86/resctrl: Enable non-contiguous CBMs in
Intel CAT") but there is no selftest that would validate if this feature
works correctly.
The selftest needs to verify if writing non-contiguous CBMs to the
schemata file behaves as expected in comparison to the information about
non-contiguous CBMs support.

The patch series is based on a rework of resctrl selftests that's currently in
review [1]. The patch also implements a similiar functionality presented
in the bash script included in the cover letter of the original
non-contiguous CBMs in Intel CAT series [2].

Changelog v2:
- Rebase onto v3 of [1] series.
- Add two patches that prepare helpers for the new test.
- Move Ilpo's patch that adds test grouping to this series.
- Apply Ilpo's suggestion to the patch that adds a new test.

[1] https://lore.kernel.org/all/[e-mail]/
[2] https://lore.kernel.org/all/[e-mail]/

Ilpo Järvinen (1):
  selftests/resctrl: Add test groups and name L3 CAT test L3_CAT

Maciej Wieczor-Retman (3):
  selftests/resctrl: Add helpers for the non-contiguous test
  selftests/resctrl: Split validate_resctrl_feature_request()
  selftests/resctrl: Add non-contiguous CBMs CAT test

 tools/testing/selftests/resctrl/cat_test.c    | 80 ++++++++++++++++-
 tools/testing/selftests/resctrl/cmt_test.c    |  4 +-
 tools/testing/selftests/resctrl/mba_test.c    |  5 +-
 tools/testing/selftests/resctrl/mbm_test.c    |  6 +-
 tools/testing/selftests/resctrl/resctrl.h     | 12 ++-
 .../testing/selftests/resctrl/resctrl_tests.c | 18 ++--
 tools/testing/selftests/resctrl/resctrlfs.c   | 86 ++++++++++++++++---
 7 files changed, 185 insertions(+), 26 deletions(-)